Interdimensional Beast, Pandora Chimera (G-CB04/S06EN) [Gear of Fate]

[ G guardian ] (Usable when both fighters' vanguards are grade 3 or greater, and the number of face up G guardians in your G zone is three or less) -Opponent Turn's Guard Step-[Choose a card with "Heal" from your hand, and discard it] Call this card to your (GC) from face down. [AUTO]: [Counter Blast (1)] When this unit is placed on (GC), you may pay the cost. If you do, your opponent chooses a unit in his or her back row, and puts that unit on the bottom of his or her deck.